430 



Annals Entomological Society of America [Vol. IV,. 



the humeri are very dark. Thoracic hairs all pale, striate or ribbed 

 thick at the base and near the tip pointed, there arc narrow elongate 

 scales and wider scales emarginate at the tip and in the wider forms the 

 processes are more prolonged ; no fringe of forward directed hairs on the 

 anterior border beneath; prothorax polished, punctures circular, rather 

 deep, and distinctly separated. 



Map 7. 



Distribution of Phytonomus trivialities Say, maritimus 

 Titus, pubicollis Lee, and castor Lee. 



Elytra about four times as long as prothorax along the dorsum, or 

 in some specimens longer; stria? very distinct, their punctures especially 

 so on the dorsum, in each black circular puncture there is a short stout 

 hair ; the interspaces have elongate hairs which are thickened and ribbed 

 for two-thirds of their length and then abruptly narrowed on one side 

 and slender to the point ; scales of the elytra striate only slightly emar- 

 ginate, points produced as long slender processes. All the elytral and 



